Olivia won't stop crying!

For the past two nights Olivia has been very moody! The littlest things make her cry. If the dog it's her arm with her tail she screams like she fell Down. She won't lay on her back if you put her in her crib she screams like someone's attacking her! I took her to the doctor today and they said she's perfectly fine! I know she's getting teeth but is that the only reason why she's acting like this??

    It could be. When my son is teething, like now, he is a beast! Every little thing sets him off for no reason.